US2986891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-temperature vessels
Assignee: Arthur D Little Inc
•
Filing: 1958-02-10
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Granted: 1961-06-06
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Expires: 1978-02-10
Abstract
No abstract record available.
Inventors
- 👤 Howard O Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:36
CPC Classifications
F; F17; F17C; F17C3/00; F17C3/02; F17C3/10; F17C2201/00; F17C2201/01; F17C2201/0128; F17C2203/00; F17C2203/01; F17C2203/014; F17C2203/015; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/0316; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0631; F17C2203/0634; F17C2203/0636; F17C2221/00; F17C2221/01; F17C2221/012; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/033; F17C2260/00; F17C2260/03; F17C2260/031; F17C2265/00; F17C2265/03; F17C2265/031; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0171; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/32; Y10; Y10S; Y10S220/00; Y10S220/901; Y10S220/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US539756A
Cited
US662217A
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US1740848A
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US2159187A
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US2195077A
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US2513749A
Cited
US2907177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |